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About product and suppliers:
        Alibaba.com offers 168,528 screw making machine products. About 61% of these are plastic extruders, 1% are other metal & metallurgy machinery, and 1% are thread rolling machines. 

A wide variety of screw making machine options are available to you, such as free samples, paid samples. 

There are 168,480 screw making machine suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Taiwan, which supply 99%, 1%, and 1% of screw making machine respectively. 

Screw making machine products are most popular in Mid East, Domestic Market, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 38,421 with ISO9001, 20,382 with Other, and 804 with ISO14001 certification.